activerecord_lookup_or_initialize

ActiveRecord::Relation extension. Search object inside association.

Method find_or_initialize_by return object outside collection, to get back inside use lookup_or_initialize_by instead.

Add this line to your application's Gemfile:

gem 'activerecord_lookup_or_initialize'

And then execute:

$ bundle

Or install it yourself as:

$ gem install activerecord_lookup_or_initialize

class User < ActiveRecord::Base
  has_many :comments, dependent: :destroy, inverse_of: :user
end

class Comment < ActiveRecord::Base
  belongs_to :user, inverse_of: :comments
end

user = User.first
comment = user.comments.lookup_or_initialize_by(message: 'first user message')

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request